Jeff Frost <jeff(at)pgexperts(dot)com> writes:
> A few times today, we've seen postgresql 9.1.3 backends on Ubuntu 11.10 x86_64
> get stuck in 'startup' mode.
Well, the one you backtraced seems to be waiting for somebody else to
release one of the buffer mapping locks ... which is not a lock I'd
expect to get held long, ever. Could you check all the Postgres
processes and see which of them have backtraces different from that?
We need to figure out what's sitting on that lock and why.
regards, tom lane
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